Tobacco pipe



, A-.1uly27,1943.` E G, MARHN 2,325,412

TOBACCO PIPE Filed June 22. 1940 g /7 /5/6 SI5/a 4]..5 3o l 2,5 z; 2,4 gs 2,0

l I j m//m i it 25 INVENTOR v "c: 23 @yg/'d-/d/I 3? :C 24 M6972@ 3/ `24 23 27 27 $23.5 ATTORNEY Pstenied July 27, 1943 t Appumion June 2z, 1940, serial Nn. 341,801 (ci. rs1- 194) 'I'his invention relates-to tobacco pipes. An object of this invention is to provide a satisfactory and desirable tobacco pipe equipped with a metal bowl that will not have any inherent odor or flavor to impart tol the smoke and'that will not absorb strong odors and flavors to be later given on along with the smoke. A Another object is to provide a pipe in which all parts except the mouthpiece are of metal and are therefore very durable.

Another object is to provide a pipe that is well adapted for the use of pre-formed unit charges of tobacco in which the tobacco of each charge is contained within a protective covering that' is inserted in the pipe bowl along with the charge and is positioned between the pipe bowl and the burning tobacco.

Another object is to provide a .tobacco pipe having an inner metal bowl member and an outer metal bowl member positioned one within the other with their walls in spacedapart relation'to aiford therebetween a space through l which air may circulate to help keep the outer metal bowl member cool, the outer metal bowl member also preferably being provided with heat radiating fins to help radiate the heat so thatI the outer metal bowl member will not be unf comfortably warm to the touch.

Another object is to provide a tobacco pipe having a'metal stem comprising a plurality of metal tubes of different size telescopicaily diiposed relative yto each other to provide annu- 'lar passageways through whichthe smoke must travel from the pipe bowl to3 the mouthpiece for cooling the smoke and condensing and trapping the moisture before thesmoke reaches the mouth of the smoker, said tubes also serving as a trap for moisture from the mouth of th`e smoker. In connection with these telescopic metal .pipe stem tubes iirisl a further object to provide a structure which is very quickly and easily disassembled for the purpose -of cleaning'and to provide a structure inwhich most of the moisture is condensed in the outer mbe orf stem where there will be no` danger of it reaching the mouth of the smoker. l

Other objects are to provide a pipe that is easily assembled and taken apart, that is dis'- tinctive and attractive in appearance, and'one that provides a cool and satisfying smoke irrespective of whether it is smoked fast or slow.

Other objects will be apparent from the following description and accompanying drawing.

In the drawing Figure '1 1s a plan view of atobacco pipe constructed in accordance with the invention.

Fig. 2 is a side elevation of the same looking in the direction indicated by broken line 2-2 of Fig. l.

Fig. 3 is a sectional view on broken line 3-.3 of Fig. 1.

Fig. 4 is a sectional view taken on broken line 4-4 ofFig. 3.

Fig. 5 is a sectional view similar to Fig. 4, showing alternative means of assembling the bowl and stem portions of the pipe.

Fig. 6 is a fragmentary detail on a larger scale than the other figures.

Fig. 'I is a fragmentary detached view partly in section and partly in elevation showing a modified type of outer bowl member.

Fig. 8 is a sectional view of a roll or unit charge of tobacco that is especially prepared for use in this pipe.

Like reference numerals designate like parts throughout the several views.

In Figs. 1 to 4 and 6 the numeral l 0 designates an outer metallic bowl member provided with a multiplicity of spaced apart annular fins II for v cooling purposes.

The upper end portion of the outer bowl member In has an annular recess I2 for the reception of an'fexternal annular flange I3 on an inner metallic pipe bowl Il that is positioned within the outer bowl I0.

l An externally threaded tubular boss I5 that protrudes downwardly from the center of the bottom portion of the inner pipe bowl Il is adapted to screw into an internally threaded boss I6 'that projects downwardly from the center of the bottom portion of the outer pipe bowl I0. A smoke loutlet; opening 9 is provided in the boss I 5. Preferably the flange I3 is beveled on the under side where it ts into the recess I2, as best shown inrFig. 6, so that the contact area between the outer pipe bowl I0 and flange I3 is very small and transfer of heat by conduction from the inner pipe bowl to the outer pipe bowl is reduced to a The external diameter of the inner pipe bowl Il is 'substantially less than the internal diam- -eter of the outer pipe bowl l0 whereby an annular air circulation space- YII is provided between the two pipe bowls. The inner pipe bowl I4 is also5 shorter than the outer pipe bowl VIII so that a continuation of the air circulation space I'l is provided between the two spaced apart bottoms of Asaid two pipe bowls. A plurality of openings I8 are provided in the bottoml of the outer pipe bowl I9 and-a plurality of other openings I9 are provided in the outer pipe bowl I adjacent the upper end thereof. These openings I9 and I9 permit air to `enter through the'bottom openings I8 and escape through the upper openings I9, this dissipates the heat rapidly and at the same time insures that the outer pipe bowl I9 will always be kept cool enough so that it may be handled without discomfort.

- The stem of this pipe comprises an outer tube 29 of thin metalr of relatively large diameter. The tubular stem 29 is normally closed at its outer end by la removable mouthpiece 2| and is normally closed at its other end by a removable plug member 22. The plug member 22 has a tube 23 of less diameter than. the stem 29 secured 24 between the interior of the stem 29 and the exterior of the tube 23 when these two parts are in assembled relation. The mouthpiece 2l has a' tube 25 secured thereto and registering with an opening 26 in the mouthpiece. The tube 25 is of smaller diameter than the tube 23 and is posiytioned coaxially'within the tube 23x when the stem parts are in assembled relation thereby leaving an annular smoke passageway 21 between the `inside of the tube 23 and the 'outside of thei smaller tube 25. Preferably the smaller tube 25 terminates at a location near the plug 22 and the intermediate tube 23 terminates at a location near the mouthpiece 2I whereby a long distance of travel for the smoke is provided. Also preferably the plug 22 is `made hollow inside to minimize weight and said plug 22 is externally provided with annular iins 28 to dissipate heat and to provide a more ornamental design.

A heat radiating bowl base 29 is provided at the bottom of the bowl members I9 and I4. The stem 29 passes through a suitable opening in the bowl base 29 and the threaded boss I 6 on the bottom portion of the outer bowl member Ill screws into an internally threaded hole in the stem 20 to secure the bowl members and the bowl base and the stem in assembled relation. The bowl base 29 has a boss 39 that seats against the bottom of the outer bowl member I0. When the threaded boss I6 is screwed tightly into the stem 29 the bowl base 29 is securely clamped between the bowl I9 and the stem 20. This insures firm contact and good heat conductivity between the bowl members and the stem and the bowl base.

The bowl base 29 has external heat radiating fins 3I for dissipating-the heat transmitted from the bowl and stem. The fins 3| are Shaped so that they carry out the ornamental streamline design of the bowl. The b'ase portion of the bowl base is circular and provides a convenient and stable support for holding the pipe upright when it is placed on a at surface, such as a table.

Fig. shows different means for holding the several parts in assembled relation. In this structure an upwardly directed tubular boss 32 on the bowl base fits within a downwardly directed tubular boss 33 on the bottom portion of the outer bowl member and the boss 33 rests on the bowl base. The downwardly directed externally threaded boss I5 on the inner bowl member I4 screws directly into a threaded hole in the stem 20. When the parts are assembled as shown in Fig. 5 and the boss I5 is screwed tightly into v the stem pressure of the flange I3 on the upper end portion of the outer bowl member will clamp all of the parts in rmly assembled relation. The other parts shown in Fig. 5 are similar to those in Figs. l to 4 and are correspondingly numbered. c

Fig. 7 shows a modied form of outer pipe bowl having a plurality `of vertical slots 36 milled or otherwise formed in the wall thereof to provide for a very free circulation of air for cooling purposes.

A preferred form of tobacco for use in this pipe is put up as shown in Fig. 8, wherein an amount of tobacco 34 sumcient to ll the. pipe is contained within a cylindrical wrapping 35, prefer- .vably of paper that may be consumedysuch as ythereto to provide an annular smoke passageway n l cigarette paper. This forms a unit charge of tobacco of the correct size and shape to fill the pipe bowl. This unit charge is inserted bodily in` -the bowl and the paper Wrapping 35 is betweenV the tobacco and the bowl during the smoking of the tobacco. If desired an air tight wrapper may be provided on each unit charge in addition to the wrapper 35 to prevent drying out of the tobacco.

Preferably both bowl members are made out of a light weight metal alloy, such as duralumin` bowl is suflicient taper to insure snug reception' and holding of the unit charges. l

When this pipe is in use the smoke will be drawn through opening Sinto annular passageway 24. It vwill travel along passageway 24 to the open end of tube 23, thence back along annular passageway 2'I to the open end of tube 25, thence through tube 25 to the mouthpiece, During the time the smoke is traveling inpassageway 24 it will be in contact with the thin metal Wall of the atmospherically cooled pipe stem 20 and most of the moisture in the smoke will be condensed in this outer passageway 24. Some moisture may also be condensed in the passageway 2l and tube 25 and the smoke will be relatively dry and cool by the time it reaches the mouth of the smoker.

'I'he tube 25 is withdrawn with the mouthpiece 2| and the tube 23 is withdrawn with the plug 22. This provides for quick and easy cleaning. The air circulation between the two bowl members together with the ns on the outer bowl member I0 insure that the outer bowl will always be cool enough to be handled comfortably. Obviously the fins on the outer bowlk Ill lmay be milled vertically of the bowl instead of being turned circumferentially.

The bowl base 28. with cooling fins thereon, extends around the portion of the pipe stem that would ordinarily be most highly heated and is in heat conductive contact with both the bowl and the stem so that it serves to radiate the heat from thislocation and avoids the danger of this portion of the stem becoming hot enough to burn the hands.

The stem 20 is freely removable from the bowl base 29 when the bowl is unscrewed from the stem and all of the parts are very quickly and easily assembled and dis-assembled.

This pipe is light in weight, attractive in appearance and is a highly` satisfactory pipe to smoke as it traps all of the condensed. moisture..

cools the smoke and does not impart any flavors or odors to the smoke which are not inherent in the tobacco being used.

The foregoing description and accompanying drawing clearly disclose a preferred embodiment of my invention but it will be understood that this disclosure is merely illustrative and that such changes in the device may be made as are within the scope and spirit Aof the following claims.

I claim:

1. In a tobacco pipe, an outer metal bowl member; an inner metal bowl membervof smalller size than said outer bowl member positioned within said outer bowl member in spaced relation from the walls thereof to provide between said bowl members an air circulation space having communication with the atmosphere at its upper and lower portions; heat radiating fins on said outer metal bowl member; a heat radiating metal bowl base positioned in heat conductive engagement with the bottom portion of one of said bowl members; and a stem extending into said bowl base and having threaded engagement with one of said bowl members whereby said bowl member, said bowl base and said stem are held in assembled relation.

2. In a .tobacco pipe, a metal bowl; a separable. tubular heat radiating metal bowl base positioned at the base portion of said bowl; a tubular metal stem extending through said bowl base; and a tubular boss` on the bottom portion of said bowl threaded into. said stem holding the several parts of said pipe in assembled relation and securely clamping portions of said bowl base in heat conductive engagement with said bowl and said stem.

3. In a tobacco pipe, an outer metal bowl member; an inner metal bowl member -of smailer diameter than said outer bowl member posibers said bowl base and said stem in assembled tioned within said outer bowl member in spaced relation from the walls thereof to provide air circulation space therebetween; a tubular threaded boss on the bottom portion of said outer bowl member; a tubular threaded boss on the bottomv portion of said inner bowl member threaded into the tubular'boss on said outer bowl member providing for conduction of heat from said inner bowl member to the bottom por tion of'said outer bowl member; a heat radiatinging metal bowl base positioned at the base portionof said bowl members; and a tubular metal stem extending through said bowl base, said stein having a threaded opening receiving the threaded boss on said cuter bowl member whereby the parts are held together in assembled relation with the bowl base clamped in heat conductive engagement with said outer bowl member and said stem.

4. A tobacco pipe comprising an outer metal bowl member; an inner metal bowl member of smaller diameter than said outer metal bowl member positioned within said outer bowl mem- 'ber in spaced relation from the walls thereof to relation.

EDWARD G. MARTIN. 

